[Java] Best container to use?

cherrio

OK, need advice on the best Swing container to use. Basically I have JPanels appearing on "the container", this container has to be able to scroll.

Its for an application similar to Rational Rose. Any suggestions?

aidan_walsh

Put your JPanels inside a JScrollPane. Voila, scrolling.

cherrio

thanks for the quick reply

Trying that at the moment, but its refusing to scroll. Even setting the setHorizontalScrollBarPolicy() the scroll bar remain inactive. Any suggestions?

	private JScrollPane getScrPnl() {
		if (scrPnl == null) {
			scrPnl = new JScrollPane();
			scrPnl.setViewportView(getPnlXMLScreen());
			scrPnl.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
			scrPnl.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
		}
		return scrPnl;
	}

aidan_walsh

Are you making sure to make the JPanel larger that the size of the container window?

cherrio

setting pnlXMLScreen.setPreferredSize(new Dimension(1000, 1000));

Gets the scroll bars to appear and function. But the elements cannot be put outside that area. Is dynamically changing the PreferredSize as I add componets the way to do it?

aidan_walsh

Yep.

cherrio

Sweet Thx for the help.